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M A X P L U S 2 1 1 O P T I O N S P I N D L E A M P L I F I E R
Application
This manual is designed to help you install the MaxPlus™ 211 Option Spindle amplifier.
Unpacking and Inspection
Carefully unpack the amplifier and inspect it for visible damage. Check items against the
packing list. Report any missing or damaged items to your supplier.
Warranty and Service
The amplifier is warranted to be free from defects in workmanship and materials for a period
of two years from the original shipment by MTS Automation.
During the warranty period, a defective amplifier unit will be repaired or replaced as outlined
below.
Before requesting return authorization, please try to verify that the problem is within the
amplifier, and not with external devices.
To arrange for repair or replacement, please contact:
•
You must provide the model and serial number from the labels on the amplifier.
•
You must provide an explanation as to why the unit is being returned.
•
You will be issued a return authorization number which must be marked on the return shipment and
on all correspondence.
MTS Automation Customer Service
(507) 354-1616
(800) 967-1785
Monday–Friday, 8:00–4:30 Central Time
Continued on next page
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Summary of Contents for MTS Systems MAXPLUS 211
- Page 1 M A X P L U S 2 1 1 O P T I O N S P I N D L E A M P L I F I E R Application This manual is designed to help you install the MaxPlus™ 211 Option Spindle amplifier. Unpacking and Inspection Carefully unpack the amplifier and inspect it for visible damage.
- Page 2 Warranty and Service (continued) Service Under Warranty • Return your defective unit, freight prepaid, and it will be repaired and returned within two weeks of receipt via regular UPS, freight prepaid. • Upon request, a factory-repaired replacement unit will be sent via regular prepaid UPS, within 4 working days.
- Page 3 Introduction The SPINDLE amplifier is available as a means to cause a realignment of the resolver. This allows the motor to be configured in either a DELTA or a WYE configuration. Since the motor is also wound with its windings in a Bi-filar manner, the windings can be placed in either series or a parallel mode of operation.
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Page 4: Specifications
Specifications Parameter Specification Operating Environment: Temperature 0 to 45° C (32 to 113° F) Maximum, Ambient Humidity 0 to 95% noncondensing Input/Output Interface: Analog Signals Velocity Command Input Differential input 0 to ±10 Vdc(15 Vdc Max) Auxiliary Input Differential input 0 to ±10 Vdc(15 Vdc Max) Velocity Output 2.4 volts = 1200, 2400, or 4200 rpm Current Output... - Page 5 Parameter Specification Motor Inductance: 230 Volt Amplifiers: For all 230 volt products, the inductance line to line must be no less than 2mH. 460 Volt Amplifiers: For all 460 volt products, the inductance line to line must be no less than 4mH. The turn ON times of the power switches can cause catastrophic destruction of motors.
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Page 6: Side View
MPA-25 to MPA-75-SPN Mechanical Footprint NOTE .5 RECOMMENDED SIDE VIEW FRONT VIEW 14.6 13.6 1.0" Summary of Amplifier Dimensions MODEL A in. B in. C in. D in. MPA-25-SPN 0.53 10.63 MPA-35-SPN 0.53 10.63 MPA-50-SPN 10.63 MPA-75-SPN 11.25 MPA-50-460-SPN 11.25 NOTE If front cover is attached, additional clearance of .2 should be allowed. - Page 7 Signal/Wiring Overview POWER FEEDBACK SHLD SHLD LIMIT RESET HI-BUS MOTOR FEEDBACK AMPLIFIER SHORTS CONTINUOUS CURRENT MARK ENCODER -AUX +AUX -COM +COM RESP SHFT SLOW RESET...
- Page 8 Feedback Wiring FEEDBACK 100% SHIELDED SHLD SHLD WINDING THERMOSTAT REFERENCE FREQUENCY 2KHZ 20-25 VP-P SIN/COS 0-5V MAX RMS LIMIT RESET HI-BUS MOTOR FEEDBACK AMPLIFIER SHORTS CONTINUOUS CURRENT MARK NOTE 100% shielded cable is foil and braid. The pairs do not have to be twisted. The resolver wiring should not be run adjacent to any non-shielded high voltage wires, such as the motor wires (RST).
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Page 9: Diagnostic Indicators
Diagnostic Indicators INDICATION MARK (RED) This is an output that comes ON at the resolver zero position and can be used in conjunction with alignment procedures. The zero position is about .5 degrees. CURRENT(BI-COLOR) This is a bi-colored LED that produces either red or green as a function of load. - Page 10 Simulated Encoder Signals For external counting or position control, a 9-pin D type female connector that has TTL differential outputs is provided. This simulates quadrature encoder channel A and channel B signals. A differential mark signal is also available. TYPICAL ENCODER CABLE 100% SHIELD (FOIL AND BRAID) ENCODER...
- Page 11 I/O Wiring and Descriptions The amplifier has three inputs and two outputs. These inputs and outputs are designed to interface to a 24 volt logic system. The amplifier is shipped so that the operation of the inputs is as follows. With no wires connected to ENB, SPD, or SHFT, the amplifier is not enabled and normal operation will not occur.
- Page 12 Ramps are enabled by default. Grounding PIN 12 (ramps) disables ramping. Grounding PIN 13 (orient) causes the motor shaft to rotate at 1 rps. The motor can be wired for three possible speeds. Low Speed 1 is Series Star. Second Speed is Parallel Star and High Speed is Parallel Delta.
- Page 13 Analog Inputs, Outputs, and Adjustments Inputs There is one analog input channel for the command input. This is a differential input and it is summed with a TAC feedback amplifier that controls velocity. ANALOG INPUT WIRING EXAMPLE ENCODER ORIENT RAMPS –COMMAND SIGNAL -COM +COMMAND SIGNAL...
- Page 14 The location of these adjustments is directly below the I/O wiring. NOTE The pot labeled AUX controls the speed of the spindle orient feature and need not be adjusted by the user. FEEDBACK AND I/O CONTROL ASSEMBLY ENCODER ORIENT RAMPS -COM +COM RESP...
- Page 15 Analog Inputs (Specific Interface Requirements) The analog input channel is a differential input amplifier to allow controllers that have differential output drivers a three wire connection that excludes potential ground loops. When differential modes of operation are used, the command input is based on 5 volts equaling maximum input and the analog ground from the external controller must be connected to the MPA drives GND connection.
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Page 16: Jumper Selections
Jumper Selections SIMULATED RESET ENCODER I/O WIRING FEEDBACK WIRING JP19 DIP 1 JP11 1 2 3 4 BI-POLAR ABSOLUTE (STANDARD) The position of this jumper determines the kind of dc voltage proportional to current that is a diagnostic signal at the (CUR) output of the I/O connector. With the shorting pin in the bipolar position, the output CUR signal is plus for positive current and minus for negative current. - Page 17 SPINDLE ORIENT ENABLE JP19 enabled disabled (STANDARD) The position of this jumper determines whether the shaft will turn at 1 rps when PIN 13 is grounded. ORIENT DIRECTION JP11 CW (viewed from shaft end) (STANDARD) The position of this jumper determines which direction the motor will turn when the orient feature is enabled.
- Page 18 AC Input and Internal Protection A branch circuit disconnect must be provided in front of the amplifier. Model Three Phase Power MPA-25-SPINDLE 18 amps 80-260 Vac MPA-35-SPINDLE 26 amps 80-260 Vac MPA-50-SPINDLE 35 amps 80-260 Vac MPA-75-SPINDLE 55 amps 80-260 Vac MPA-50-460-SPINDLE 40 amps 180-520 Vac...
- Page 19 Grounding The ac supply source for the amplifier is supposed to be bonded to earth ground. Typical WYE Secondary L1 (HOT) L2 (HOT) L3 (HOT) EARTH GROUND Typical Delta Secondary L1 (HOT) L2 (HOT) L3 (HOT) EARTH GROUND These are the two most typical transformer configurations and failure to ground these properly could void warranty.
- Page 20 There are too many transformers to depict all combinations. The MPA amplifier does not care where the earth ground is. This example is a delta secondary. Delta Secondary L1 (HOT) L3 (HOT) L2 (NEUTRAL) EARTH GROUND In this example, L1 became ground.
- Page 21 Power/Grounding Requirements The following information covers the grounding requirements of 3-phase servo amplifiers manufactured by MTS Automation. It has been found when an amplifier has been connected to a transformer with an ungrounded secondary, premature amplifier failure will occur. The 3-phase MPA amplifiers require the AC power (L1, L2, L3, and Ground) be derived from a transformer which has it's secondary intentionally bonded to earth ground.
- Page 22 Example 1 shows a typical factory configuration. It shows a ungrounded delta secondary and there is existing equipment already running. on line. This equipment could be simple 3-phase induction motors where an ungrounded secondary is not an issue. However, before a 3-phase MPA amplifier, or a machine utilizing 3-phase amplifiers, can be connected, an isolation transformer, with a grounded secondary must be installed.
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Page 23: Relay Box
Example Control/Motor Wiring Low Speed - K6 & K7 Deenergized Medium Speed - K6 Deenergized & K7 Energized High Speed - K6 & K7 Energized CONTROL 120V AC AMPLIFIER RELAY BOX ENCODER -AUX +AUX -COM +COM RESP 6 – GROUND 4 –... - Page 24 Dual Winding Schematic...
- Page 25 Stator Wiring The locked rotor stator current is equal to the amplifiers continuous rating and for either low speed or locked rotor conditions the stator must withstand this continuous rating. Derating the stator wiring for three phase operation should not be done. Model Locked Rotor MPA-25-SPINDLE...
- Page 26 Spindle Amplifier Shunt Loads Regenerative energy during deceleration causes the normal voltage on the amplifiers bus to increase. The amount of energy is application dependent and relates to total inertia. In general the amplifiers internal shunt load can dissipate this energy within the constraint that the load inertia is not more than 20 times that of the rotor but this is a guideline.
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Page 27: Thermal Characteristics
Thermal Characteristics The amplifiers are specified to operate at a 45° C ambient. This is not a maximum safe operating specification. There are no parts in the amplifier that can not operate at a 60° C temperature. The absolute maximum temperatures that the amplifier can operate at are determined by thermal switches on the bridge switch power devices (IGBT's) and on the shunt loads. - Page 28 The "-EXS" Option In high inertia applications, energy stored in the load must be dissipated in the amplifiers bridge, bus capacitance, and parallel shunt load. In certain machining operations, multiple passes are required and the heat rise from this energy cannot be dissipated in the amplifiers internal shunt without causing an amplifier thermal fault.
- Page 29 Shunt/Amplifier Wiring...
- Page 30 EXS- Mechanical Footprint 16.0" 15.5" 0.5" 1.0" 8.5" 9.5" 5.6"...
- Page 31 External Inductors External inductors can be placed in the amplifier R, S, and T leads to assure that the minimum inductance specification is assured. 230 volt models are 2mH, and 460 volt models are 4mH. Since the inductors can become very hot, it is recommended that they be wired external to the amplifier enclosure but in front of the relay switching device.
- Page 32 Inductor Mechanical Footprint (loose parts) Typical: IND-100-.5mH 5.25" 4.81" .44" 3.85" 4.27" .42" 6.35"...
- Page 33 Typical: IND-25-460-2mH 3.75” Clearance 3.39" 3.10" .20" .29" 3.30" .25" 3.05" 4.60"...
- Page 34 Inductor Box IBX-100-.5mH In applications where other equipment is supplied in the same enclosure and there is a requirement to reduce the effects of radiated noise, the inductors are available pre-mounted in an enclosure. To properly reduce the affects of radiated noise, the motor cable, RST, and GND, must be in a 100% shielded cable.
- Page 35 Inductor Box IBX-50-1mH 0.000 1.500 2.000 10.000 10.500 12.000...
- Page 36 Start-Up Once normal wiring is verified, power can be applied to the amplifier. Assure the inputs are what are required. The Enable Input will disable the amplifier if it is not connected. The CUR and RESP adjustments are turned down (CCW). CUR is 50% and RESP is minimal.